Fix an assertion failure and a case where an rdataset's trust wasn't set.
Fix an assertion failure and a case where an rdataset's trust wasn't set.

pecharmin/bind9,each/bind9-collab,pecharmin/bind9,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,pecharmin/bind9,each/bind9-collab,each/bind9-collab,pecharmin/bind9